MiCOM P72x also offers the same application benefits as traditional high impedance electromechanical protection schemes, it combines the added benefits of numerical technology to provide advanced communications, event records, fault records, disturbance records and ancillary protection features.
Combined with the MiCOM P79x, a standalone metrosil and resistor unit, it provides simplified scheme engineering for single or three-phase differential applications.
Standard Manufacturers Warranty: 2 years
Numerical High Impedance Relay
Simple scheme engineering
Reliable algorithm - stable for through fault and fast trip for internal fault
Supervision functions included in the same protection box
Set by current or voltage
Numerical relay features
P72x offers reliable protection for busbars, transformers windings, generators, reactors and motors. P721 is suitable for restricted earth fault (REF) or balanced earth fault (BER) applications. P723 is suitable for busbar and machine phase differential protection.